Drone plugin for caching build artifacts in S3

This plugin allows for caching build artifact directories containing external libraries, packages, etc in S3 which should speed up build process. Cache is currently keyed by repository name e.g. UKHomeOffice/<project_name>. This should suffice in most cases. S3 cache automatically expires after 7 days.

The following parameters are used to configure the plugin:

• drone_s3_cache_mode: defines the mode of operation. Possible values pull, push.
• drone_s3_cache_folders: list of local project directories to be cached in S3, e.g.:

drone_s3_cache_folders: 
  - .bundle
  - folder1
  - folder2/foo

• drone_s3_cache_bucket_name: S3 bucket name. This can be configured in drone secrets as DRONE_S3_CACHE_BUCKET_NAME. Ensure drone has permissions to get and put objects in that bucket.

AWS credentials need to be present in drone secrets (preferred!) as DRONE_S3_CACHE_AWS_ACCESS_KEY_ID, DRONE_S3_CACHE_AWS_SECRET_ACCESS_KEY or passed to the container via environment variables (local testing!) as AWS_SECRET_KEY_ID, AWS_SECRET_ACCESS_KEY

pipeline:
  drone_s3_cache_pull:
    image: quay.io/ukhomeofficedigital/drone-s3cache:latest
    drone_s3_cache_mode: "pull"

  build:
    image: ruby:2.3.1-alpine
    commands:
      - bundle install --path .bundle
    when:
      event: [push, pull_request]

  drone_s3_cache_push:
    image: quay.io/ukhomeofficedigital/drone-s3cache:latest
    drone_s3_cache_folders: ".bundle"
    drone_s3_cache_mode: "push"

Push / Merge to master will produce a docker image with a tag latest.

To create a new release, just create a new tag off master.

We welcome pull requests. Please check issues and existing PRs before submitting a patch.

Marcin Ciszak marcinc